This is a day to celebrate number 18. You. You can sell operate his career for sure. You celebrate everything hes done, ot just on the field, but off the field. Hes continued to do so much for such a long career. Youve got to celebrate that. Youve got to celebrate your record, your achievements. Playing that long. `aving two super bowl championships under your belt. Thats right, two super bowls. He leaves a champion. Tomorrow denver 7 will carry Peyton Mannings big announcement live. Manning will host a News Conference tomorrow morning at 11 00, and you can count on denver 7 to bring you live coverage right here on thedenverchannel. Com. Nfl commissar Roger Goodell is sounding off on the big he released a statement saying in part, peytons competitive fire and love of the game thrilled fans. We know that his success will continue. Fans are also reacting tonight. Some wish peyton would not retire, and others are glad to see him go out with a world championship. Denver 7s kyle horan went to Sports Authority field where many came out in honor of the qb. Reporter you dont have to go far to find true fans. Its historic, him going out on top, just like elway. I think it was the right move for him, because he should go out a winner. Reporter some would be here even if peyton wasnt planning to retire. Though some came here just for peyton. I am a colts fan. Heeis obviously one of the greatest of alltime. Reporter they think the future hall of famer should spend one more year here. Double back it. Yeah, go backtoback wins. He says no. Reporter even other teams have to give their respect. Im a cowboys fan, but i used to hate when we played cowboys. You know what im saying. Last minute. `ust always that last minute. Hed bring it out for the win. Reporter all agree the sheriff is going out on top. Im happy for him ending it with us. Peyton manning, youre the 1. Even denver mayor Michael Hancock is saying thanks to peyton today. At one point, the mayor was a bronco himself. Suiting up as the teams mascot. In a statement, he says thank you peyton for the memories, and for leading our team back to championship ways. The Indianapolis Colts shared these images on twitter, saying thedenverchannel. Com we have a link to the colts tribute viee, the team put together for manning. So what happens next . There are 19 million set aside because of mannings decision. That money will likely be used to sign Brock Osweiler on board. The exclusive negotiation period ends tomorrow, and brock could be a free agent, if there is no agreement. We have reaction from the broncos and a slide show of manning from the first day he joined the broncos up to his super bowl win last month. Turning to your first alert forecast now, you can see it right now on our radar, rain, and snow is already falling in parts of our state. This is only the beginning, folks. Stacy donaldson is tracking just how much we can expect. The cold front still outside colorado. We had beautiful weather around denver and the front range today. Afternoon highs in the upper 60s. With some cloudiness thats once again, the highs in the 60s and 70s for the easternn half of the state. For the west, we have snow thats been showing up, and a Winter Weather advisory in effect through tonight for our mountains. I just want to show you how much snow we already have showing up. Heres the location of that Winter Weather advisory here for the mountaiis. Everything shaded in red here for the southeast. Thats a red flag warning in effect for high fire danger tomorrow. And well be talking more about our chances for line here in the denver area, coming in the next 24 hours innthe next few minutes. Were on top of another big story across the country today. Former first lady, nancy reagan has died from congestive heart failure. She was 94. She was always by president their love story spanned a half century, and was well documented on film. This couple went on to win the white house. The former chief of staff reflects on the woman who was so beloved. She was his closest adviser. She was his constant protecter. And of course, she was the love of his life. Many give nancy credit to her crusade against drug and alcohol abuse. She later became an advocate for research into alzheimers after president reagan battled it for nearly a decade. Right now on thedenverchannel. Com with, very a slide show remembering theii time together in the white house. In less than an hour, Hillary Clinton and Bernie Sanders will face off in another debate. Tonights debate will be in flint, michigan. Flints water crisis is expected to be among the topics both candidates will address. Here in colorado, leaders are again considering whether to hold primaries instead of this comes after hundreds of democrats were turned away from the caucus because of long lines on super tuesday. Republicans were left angered by the fact they didnt vote at all. Leader high School Started looking to create a primary last year, but what happened on super tuesday is now increasing that urgency. Colorado held primaries for three president ial elections starting in 1992, but ended for the 2004 electton because of cost. In east denver, three dogs were rescued after this condo complex cauggt fire. The fire was sparked in the attic, but everybody got out safely. Its not clear what led up to all of this. A deadly crash stalls traffic near castle pines. One person was killed. It happened in the northbound lanes this morning. Its still not clear what led up to this crash. Plans are in place to evict people from homeless camps near homeless shelters in denver. Tomorrow, the city will ppt up but tuesday, it will begin enforcing that rule. Even tearing down tarps. Any belongings will be put in a warehouse, where the city can still pick them up. The city says its all in an effort to cut down on the health and safety risks stemming from these camps. Take a look at this. Our Colorado Avalanche players hit the fashion catwalk with a few kidd who may have just stolen the show there. Theyve all overcome a health challenge. Brunch. Proceeds from this event go to sports charities. Its something we wish we never had to think about. How to respond to an active shooter situation. Next, we take you inside a class, teaching people simple tips to keep them safe. And a homeowner shot multiple westminster. Investigation tonight. And we all know it wassa dry shouldnt be too worried just yet. We do have lots of warm weather, and dryyconditions for the eastern half of colorado, with red flag warnings in effect for the next 24 hours, and snow expected for the Higher Elevations. Well talk more about the welcome back. Its something we shouldnt have to think about, but unfortunately, we do. How to survive an active shooter situation. A martial arts studio spend the day on how to defend themselves using only their bare hands. How do you fight back against someone looking to do maximum harm to the public. Its do maximum harm to the attacker. Redirect. Comes are you okay . Yes. you have saved lives just by doing this. Reporter learning how to react to defend themselves and others in case something horrible happens. Once those attacks start. Even if the police are called that minute, its going to take them time to respond. In the 3 to 5 minutes, or even longer that it takes them to get there, a lot of people can be injured or killed. Reporter what if every day people fault back . When someone starts wrestling that gun away from them. They have to change what they think. They have to change what theyre doing. Reporter heres a simple move that i was just statute. You grab the gun, point it away from myself, and control it while attacking the attacker. Whether or not theres an attack happening, its teaching you situational awareness. Reporter the trainers hope lives the next time a mass attack happens. Trainers say even if the attacker is held for a few minutes, it could be enough time for police to get there and take over, theres more of this training happening right now. A news alert out of westminster now. Theres a 2,000 award if you can help catch the men behind a home invasion. It may be related to a pot grow. Police say two armed men barged into a home last night, and shot the homeowner. The homeowner was seriously hurt. There cculd be a cap on the in denver. City leaders are looking for alternatives to the current moratorium. Getting feedback. The plan would limit pot businesses within a defined boundary. A denver 7 report last week showed how those businesses are concentrated in a poor hispanic neighborhood. Councilmembers seem thats an appropriate situation, opposed to a moratorium. Were going to continue that conversation and assure we have the neighborhoods first and foremost. The economy plans to have additional hearings before any measure goes to the full council. In aspen, dispensaries are making big bucks off pot. The citys 7 dispensaries sold more than 8. 3 million worth of medical, and recreational pot in 2015. Thhts according to statistics from the citys finance department. Emotion 200,000 in taxes are going into city coffers. There were two months when pot sales actually topped alcohol sales. The usda found the western part of the state was the dryest. Across our state, mountain precipitation was about half of what we normally get. Researchers say this could make for a big imppct on our snowpack. Weather service say its just yet. I wouldnt say too concerning. We still have quite a bit more precipitation. As we are still in the el nino phase, we can still see some pretty good snow systems from this. She says march and april will be very important in telling how much snowpack will be affected. Denver 7 meteorologist Stacey Donaldson join us now. Were already getting a little help with this. Reporter we do have some moisture coming in from the west, but i wholeheartedly aggee. I wanted to show yyu some stats. Because our average snowfall is around 10 to 11 inches here in denver for the month of march. The most know snow weve ever seen, 35. The least amount, a trace. We do have snow coming in from the west. Actually moisture. It will be rain here in the denver area. Weve seen a mix of rain and snow. It will turn over to all snow well. If youre traveling up in the mmuntains through tomorrow, it will be cold, it will be snowy, with temperatures in the 30s, then well have 30s on tuesday. Here inndenver, 69 degrees for our hiih today. Absolutely gorgeous weather. 52 is normal. Ss were well ahead where we should be this time of the year. Night. Us. Rain in the metro area. Mountain snow showing up, and it will be warrer by the end of 3 the week once again. Well have those 60s and 70s right back until the sevenday forecast. Already, we have moisture coming in across western colorado. In the meantime, its still very dry for the 80s and 70s. The last couple of days. So we have high fire danger. The bulk is down into utah and parrs of arizona. We still have a lot of rain in but that cold front will be headed in our direction. A lot of watchee and warnings associated with this storm system. High winds here from utah into nevada and arizona. A high fire danger all the way up into colorado, nd parts of the central plains. But were focusing here on the snowfall. A Winter Weather advisory that starts tonight, lasts through tomorrow night for about 3 to 8 inches of snow. But i wanted to show you the track of this cold front. By 7 00 a. M. Tomorrow morning, we are going to see that front into western colorado. Then right over denver by noon time. Thats when we have our best chance for rainfall. If you live in tte eastern part of the state, thats when youll see most of your rainfall showing up. Our future cast, pulling that moisture into the Higher Elevations through tomorrow afternoon. Rainfalllhere for the northeastern part of the state. Then it clears out pretty quickly. We will have a few scattered showers on tuesday, as with winds back through. As for the front range. Theres really not a lot going on. By the time we hit noon time. Well get that moisture pushing on through, and snow in the Higher Elevations, and then it clears out pretty quickly. I want to break it down for you. Temperatures in the 40s. Mostly cloudy skies to start your day. By noon time, temperatures in the 50s, with sooe rain. Then well have that rain into the evening as well. Temperatures in the low 50s tomorrow for us here around 60s and 70s in tte southeastern part of the state. Here on the sevenday forecast, we turn it right back around. Were in the 60s and 70s to go all the way into the end of the week. I love that friday forecast, 70 and mild, with sunny skies. Just gorgeous. Weve been so dry in februury, but really shouldnt worry too much yet. March is so snowy typically. It is, and we have a ways to go. And well be begging for the 70s to come on back. 7, well take you inside the lab and show you the new technology that could change some lives. Welcome back. `oull only see this on denver 7. Just as easy as printing on a piece of paper. Now machines can make body parts, and its technology is denver. Lindsey watts got an up close look at the work being done at the university of denver. The benefits of 3d printing are astounding. 3d printers can build just about everything from the ground up, with incredible detail. I just need to make sure that i have the pressure exactly right. Reporter at this Denver University lab, what theyre your life. These can come straight from a hospital, or ct scan, or an mri. Reporter using doctors pictures from inside your body, researchers are able to make an in this case, a heart valve. We watched as something that took nature millions of years to perfect, printed exactly for us. This exactly matches the shape of a patients heart valve. Reporter it would go from a bioprinter to a bioreactor with cells. It would take on its shape, then this would dissolve. Those native fibers and native cells, they replace the entire scaffolding you see here, leaving nothing but natural, real blood vessel cells. Reporter the lab still has a ways to go before its heart valves reach a real beating heart. But thats the goal. Some of the people that i know have said, this would change my nieces life. Or this would change my friends life. Cofounder of denvers 3d printing store. Its in use elsewhere too, and printed this replica of a human ear. Ground breaking developments. Its not like theres been this huge body of research out there, that we can go and learn from. We are writing that book, and theyre writing important chapters here at du. Reporter advanced tools, and thinking. Use it to create something that will benefit all people. Reporter that could be coming to a body near you. Lindsey watts, denver 7. Pretty interesting. Later this year, du expects to start putting the synthetic heart valves through a bioreactor with human cells. From there, there could be an animal testing. One of the biggest advertisers unveils its new cell phone tracking program tomorrow. It collects information about where youre going, and is passed along to advertisers to billboard is in reaching a target audience. Whether i go to the grocery store, its none of anybodys business. Its my thing. It was actually rather horrifying to think that our privacy is being invaded once more. Were moving down the slippery slope. This is evolutionary. At some point, holy cow, what have we allowed throughout time, and its a lot of information. The Radar Program will begin in 11 major markets including new york and los angeles. There are plans to unveil more of those billboard trackers in other cities by the end of the year. Denver 7 took center stage at the cooorado eagles game last night. They dropped the puck to start the game off, and even got a ride on the zamboni. Today, the eagles played their family and faith game. Right now, were following big stories this afternoon. Peyton manning will officially retire. We have fan reaction. Candidates ar with a 100 electric nissan leaf. What will you do . How far will you go . Electrify the world. Now with a classleading 107 miles on a charge, the nissan leaf is the best selling electric car in america. Centurylink prism tv has all your favorite channels, tons of live sports, and more all in crystalclear hd. Watch when and where you want with advanced features like our wireless settop box, whole home dvr, and prism on the go. And choose from a variety of great packages to fit your home. Call. And get started with the prism essential tv bundle. Youll get tv plus up to 12 megs of centurylink internet. All for only 55 a month. This deal sounds great, especially if you love sports. Get prism essential tv and up to 12 megs of internet for only 55 a month. Score or, if you love great movies. [ southern accent ] hey, clementine, go on and get prism essential tv with up to 12 megs of internet for only 55 a month. Hyah [ whip cracks ] [ normal voice ] call. With prism essential tv plus up to 12 megs of internet speed. Just 55 a month for a year. Only from centurylink. Call and switch today. Were on top of a big developing story now. After 18 years in the nfl, our very own number 18 will retire. Official announcement tomorrow morning. The news has set off a big reaction around the country, with mannings teammates, past and present, weighing in on the announcement, and wwre hearing from you, the fans. I have watched Peyton Manning like from tennessee all the way up to here. The man is awesome. Its kind of sad to see Peyton Manning go. We hate to see him leave. I got to see him get a ring with the colts. Got to see him get a ring with the broncos. Its pretty cool. Hell be at the ucf training center. Well have a livv at 11 tomorrow morning. Tonight, were hearing from broncos general manager john elway, and head coach gary kubiak. Elway hired manning backkin 2012, and in a statement he says peyton was everything that we thought he was, and even more. Not only for the football team, but in the community. And head coach, gary kubiak just took over that role in the he says it was a blessing to coach pattedden manning. Nobody worked harder at the game, and nobody prepared harder than peyton. Coming up on denver 7 sports extra at 5 52, breaking down mannings record breaking career, and tell us whats next after this big announcement, and right now on thedenverchannel. Com, we have a slide show of mannings career, from the time he join the team, to last months super bowl win. Former first lady, nancy reagan has died at her home in california from congestive heart failure. Her marriage to Ronald